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Chiang CH, Chang CC, Huang HC, Chen YJ, Tsai PH, Jeng SY, Hung SI, Hsieh JH, Huang HS, Chiou SH, Lee FY, Lee SD. Corrigendum to "Investigation of Hepatoprotective Activity of Induced Pluripotent Stem Cells in the Mouse Model of Liver Injury". Biomed Res Int 2022; 2022:9794832. [PMID: 36471685 PMCID: PMC9719433 DOI: 10.1155/2022/9794832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 10/31/2022] [Indexed: 08/30/2023]
Abstract
[This corrects the article DOI: 10.1155/2011/219060.].
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Affiliation(s)
- Chih-Hung Chiang
- Institute of Pharmacology, National Yang-Ming University, No. 155, Section 2, Linong Street, Taipei 11221, Taiwan
- Division of Urology, Department of Surgery, Taipei Veterans General Hospital and Su-Ao & Yuan-Shan Branch, No. 201, Section 2, Shih-Pai Road, Taipei 11217, Taiwan
| | - Ching-Chih Chang
- School of Medicine, National Yang-Ming University, No. 155, Section 2, Linong Street, Taipei 11221, Taiwan
- Division of General Medicine, Taipei Veterans General Hospital, No. 201, Section 2, Shih-Pai Road, Taipei 11217, Taiwan
| | - Hui-Chun Huang
- School of Medicine, National Yang-Ming University, No. 155, Section 2, Linong Street, Taipei 11221, Taiwan
- Division of Gastroenterology, Taipei Veterans General Hospital, No. 201, Section 2, Shih-Pai Road, Taipei 11217, Taiwan
| | - Yi-Jen Chen
- School of Medicine, National Yang-Ming University, No. 155, Section 2, Linong Street, Taipei 11221, Taiwan
- Department of Obstetrics and Gynecology, Taipei Veterans General Hospital, No. 201, Section 2, Shih-Pai Road, Taipei 11217, Taiwan
| | - Ping-Hsing Tsai
- Institute of Pharmacology, National Yang-Ming University, No. 155, Section 2, Linong Street, Taipei 11221, Taiwan
| | - Shaw-Yeu Jeng
- Division of Urology, Department of Surgery, Taipei Veterans General Hospital and Su-Ao & Yuan-Shan Branch, No. 201, Section 2, Shih-Pai Road, Taipei 11217, Taiwan
- School of Medicine, National Yang-Ming University, No. 155, Section 2, Linong Street, Taipei 11221, Taiwan
| | - Shuen-Iu Hung
- Institute of Pharmacology, National Yang-Ming University, No. 155, Section 2, Linong Street, Taipei 11221, Taiwan
| | - Jung-Hung Hsieh
- Division of Urology, Department of Surgery, Taipei Veterans General Hospital and Su-Ao & Yuan-Shan Branch, No. 201, Section 2, Shih-Pai Road, Taipei 11217, Taiwan
| | - Hsu-Shan Huang
- Graduate Institute of Pharmacy, National Defense Medical Center, No. 161, Section 6, Minquan E. Road, Taipei 11490, Taiwan
| | - Shih-Hwa Chiou
- Institute of Pharmacology, National Yang-Ming University, No. 155, Section 2, Linong Street, Taipei 11221, Taiwan
- Department of Medical Research & Education, Taipei Veterans General Hospital, No. 201, Section 2, Shih-Pai Road, Taipei 11217, Taiwan
| | - Fa-Yauh Lee
- School of Medicine, National Yang-Ming University, No. 155, Section 2, Linong Street, Taipei 11221, Taiwan
- Division of Gastroenterology, Taipei Veterans General Hospital, No. 201, Section 2, Shih-Pai Road, Taipei 11217, Taiwan
| | - Shou-Dong Lee
- School of Medicine, National Yang-Ming University, No. 155, Section 2, Linong Street, Taipei 11221, Taiwan
- Division of Gastroenterology, Taipei Veterans General Hospital, No. 201, Section 2, Shih-Pai Road, Taipei 11217, Taiwan
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Liu YC, Chiang IT, Chung JG, Hsieh JH, Chiang CH, Weng MC, Hsu FT, Lee YH, Chang CS, Lin SS. Therapeutic Efficacy and Inhibitory Mechanism of Regorafenib Combined With Radiation in Colorectal Cancer. In Vivo 2021; 34:3217-3224. [PMID: 33144426 DOI: 10.21873/invivo.12157] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 08/24/2020] [Accepted: 08/26/2020] [Indexed: 11/10/2022]
Abstract
BACKGROUND Although both chemotherapy and radiotherapy (RT) can sufficiently maintain tumor suppression of colorectal cancer (CRC), these treatments may trigger the expression of nuclear factor kappa B (NF-κB) and compromise patients' survival. Regorafenib suppresses NF-κB activity in various tumor types. However, whether regorafenib may act as a suitable radiosensitizer to enhance therapeutic efficacy of RT remains unknown. MATERIALS AND METHODS Here, we established a CRC-bearing animal model to investigate the therapeutic efficacy of regorafenib in combination with RT, through measurement of tumor growth, body weight, whole-body computed tomography (CT) scan and immunohisto-chemistry staining. RESULTS Smallest tumor size and weight were found in the combination treatment group. In addition, RT-induced up-regulation of NF-κB and downstream proteins were diminished by regorafenib. Moreover, the body weight and liver pathology in the treated group were similar to those of the non-treated control group. CONCLUSION Regorafenib may enhance the anti-CRC efficacy of RT.
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Affiliation(s)
- Yu-Chang Liu
- Department of Radiation Oncology, Chang Bing Show Chwan Memorial Hospital, Changhua, Taiwan, R.O.C.,Department of Radiation Oncology, Show Chwan Memorial Hospital, Changhua, Taiwan, R.O.C.,Department of Medical Imaging and Radiological Sciences, Central Taiwan University of Science and Technology, Taichung, Taiwan, R.O.C
| | - I-Tsang Chiang
- Department of Radiation Oncology, Chang Bing Show Chwan Memorial Hospital, Changhua, Taiwan, R.O.C.,Department of Radiation Oncology, Show Chwan Memorial Hospital, Changhua, Taiwan, R.O.C.,Department of Medical Imaging and Radiological Sciences, Central Taiwan University of Science and Technology, Taichung, Taiwan, R.O.C
| | - Jing-Gung Chung
- Department of Biological Science and Technology, China Medical University, Taichung, Taiwan, R.O.C
| | - Jung-Hung Hsieh
- Department of Urology, Medical Research and Education, Taipei Veterans General Hospital, Yuan-Shan/Su-Ao Branch, Yilan, Taiwan, R.O.C
| | - Chih-Hung Chiang
- Department of Urology, Medical Research and Education, Taipei Veterans General Hospital, Yuan-Shan/Su-Ao Branch, Yilan, Taiwan, R.O.C.,Department of Nursing, Cardinal Tien Junior College of Healthcare and Management, New Taipei, Taiwan, R.O.C.,Department of Urology, National Taiwan University Hospital, Taipei, Taiwan, R.O.C
| | - Mao-Chi Weng
- Isotope Application Division, Institute of Nuclear Energy Research, Taoyuan, Taiwan, R.O.C
| | - Fei-Ting Hsu
- Department of Biological Science and Technology, China Medical University, Taichung, Taiwan, R.O.C.
| | - Yuan-Hao Lee
- Department of Ophthalmology and Visual Science, University of Texas Health Science Center at Houston, Houston, TX, U.S.A.
| | - Cheng-Shyong Chang
- Division of Hematology-Oncology, Department of Internal Medicine, Chang Bing Show Chwan Memorial Hospital, Changhua, Taiwan, R.O.C.
| | - Song-Shei Lin
- Department of Medical Imaging and Radiological Sciences, Central Taiwan University of Science and Technology, Taichung, Taiwan, R.O.C.
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Chi HY, Chan V, Li C, Hsieh JH, Lin PH, Tsai YH, Chen Y. Fabrication of polylactic acid/paclitaxel nano fibers by electrospinning for cancer therapeutics. BMC Chem 2020; 14:63. [PMID: 33111062 PMCID: PMC7585315 DOI: 10.1186/s13065-020-00711-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 09/17/2020] [Indexed: 12/19/2022] Open
Abstract
Polylactic acid (PLA) is a thermoplastic and biodegradable polyester, largely derived from renewable resources such as corn starch, cassava starch and sugarcane. However, PLA is only soluble in a narrow range of solvents such as tetrahydrofuran, dioxane, chlorinated solvents and heated benzene. The limited choices of solvent for PLA dissolution have imposed significant challenges in the development of specifically engineered PLA nanofibers with electrospinning techniques. Generally, the electrospun polymeric materials have been rendered with unique properties such as high porosity and complex geometry while maintaining its biodegradability and biocompatibility for emerging biomedical applications. In this study, a new anticancer drug delivery system composed of PLA nanofibers with encapsulated paclitaxel was developed by the electrospinning of the respective nanofibers on top of a spin-coated thin film with the same chemical compositions. Our unique approach is meant for promoting strong bonding between PLA-based nanofibers and their respective films in order to improve the prolonged release properties and composite film stability within a fluctuative physiochemical environment during cell culture. PLA/paclitaxel nanofiber supported on respective polymeric films were probed by scanning electronic microscope, Fourier transform infrared spectrometer and water contact measurement for determining their surface morphologies, fibers’ diameters, molecular vibrational modes, and wettability, respectively. Moreover, PLA/paclitaxel nanofibers supported on respective spin-coated films at different loadings of paclitaxel were evaluated for their abilities in killing human colorectal carcinoma cells (HCT-116). More importantly, MTT assays showed that regardless of the concentrations of paclitaxel, the growth of HCT-116 was effectively inhibited by the prolonged release of paclitaxel from PLA/paclitaxel nanofibers. An effective prolonged delivery system of paclitaxel based on PLA nanofiber-based film has demonstrated exciting potentials for emerging applications as implantable drug delivery patch in post-surgical cancer eradication.
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Affiliation(s)
- H Y Chi
- Division of Cardiovascular Surgery, Department of Surgery, Taoyuan Armed Forces General Hospital, Taoyuan, 32551 Taiwan.,Department of Biomedical Engineering, National Yang Ming University, Taipei, 11221 Taiwan
| | - Vincent Chan
- Department of Biomedical Engineering, Khalifa University, PO Box 127788, Abu Dhabi, United Arab Emirates
| | - Chuan Li
- Department of Biomedical Engineering, National Yang Ming University, Taipei, 11221 Taiwan
| | - J H Hsieh
- Department of Materials Engineering, Ming Chi University of Technology, Taishan, New Taipei City, 24301 Taiwan
| | - P H Lin
- Department of Biomedical Engineering, National Yang Ming University, Taipei, 11221 Taiwan
| | - Ya-Hui Tsai
- Department of Surgery, Far Eastern Memorial Hospital, Banqiao, New Taipei City, 22060 Taiwan
| | - Yun Chen
- Department of Surgery, Far Eastern Memorial Hospital, Banqiao, New Taipei City, 22060 Taiwan
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Liu YC, Lin KH, Hsieh JH, Chung JG, Tan ZL, Hsu FT, Chiang CH. Hyperforin Induces Apoptosis Through Extrinsic/Intrinsic Pathways and Inhibits NF-ĸB-modulated Survival and Invasion Potential in Bladder Cancer. In Vivo 2020; 33:1865-1877. [PMID: 31662514 DOI: 10.21873/invivo.11680] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 08/01/2019] [Accepted: 08/02/2019] [Indexed: 12/16/2022]
Abstract
BACKGROUND/AIM Muscle-invasive bladder cancer (MIBC) has long been recognized as a difficult to treat cancer type, thus a new treatment strategy is needed. The major purpose of the present study was to verify the anticancer effect of hyperforin and the mechanism through which it affects tumor cell growth and invasion in bladder cancer in vitro. MATERIALS AND METHODS Bladder cancer TSGH-8301 cells were treated with different concentrations of hyperforin for different durations of time. The changes in cell viability, production of calcium and reactive oxygen species (ROS), and anti-apoptotic signaling were evaluated using MTT assay, flow cytometry, and western blot analysis. The effect of hyperforin on the expression of nuclear factor-kappaB (NF-ĸB) p65 (Ser276), tumor progression-associated proteins, as well as on cell invasion was investigated using western blotting and cell invasion assay, respectively. RESULTS Hyperforin significantly induces apoptosis, extrinsic/intrinsic apoptotic signaling, accumulation of cytosol ROS, and calcium signalling. Hyperforin also significantly diminishes the expression of NF-ĸB p65 (Ser276), anti-apoptotic and tumor progression-associated proteins, as well as the cell invasion ability of TSGH-8301 cells. CONCLUSION Our findings demonstrate that hyperforin triggers apoptosis depending on extrinsic/intrinsic pathways and suppresses NF-ĸB-mediated cell survival as well as the invasive properties of bladder cancer in vitro.
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Affiliation(s)
- Yu-Chang Liu
- Department of Medical Imaging and Radiological Sciences, Central Taiwan University of Science and Technology, Taichung, Taiwan, R.O.C.,Department of Radiation Oncology, Show Chwan Memorial Hospital, Changhua, Taiwan, R.O.C.,Department of Radiation Oncology, Chang Bing Show Chwan Memorial Hospital, Changhua, Taiwan, R.O.C
| | - Kuang-Hsuan Lin
- Department of Radiation Oncology, Chang Bing Show Chwan Memorial Hospital, Changhua, Taiwan, R.O.C
| | - Jung-Hung Hsieh
- Department of Urology, Medical Research and Education, Taipei Veterans General Hospital, Yuan-Shan/Su-Ao Branch, Yilan, Taiwan, R.O.C
| | - Jing-Gung Chung
- Department of Biotechnology, Asia University, Taichung, Taiwan, R.O.C.,Department of Biological Science and Technology, China Medical University, Taichung, Taiwan, R.O.C
| | - Zhao-Lin Tan
- Department of Medical Imaging and Radiological Sciences, Central Taiwan University of Science and Technology, Taichung, Taiwan, R.O.C.,Department of Biological Science and Technology, China Medical University, Taichung, Taiwan, R.O.C
| | - Fei-Ting Hsu
- Department of Biological Science and Technology, China Medical University, Taichung, Taiwan, R.O.C
| | - Chih-Hung Chiang
- Department of Urology, Medical Research and Education, Taipei Veterans General Hospital, Yuan-Shan/Su-Ao Branch, Yilan, Taiwan, R.O.C. .,Department of Nursing, Cardinal Tien Junior College of Healthcare and Management, New Taipei, Taiwan, R.O.C.,Department of Urology, National Taiwan University Hospital, Taipei, Taiwan, R.O.C
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Huang CS, Lin HC, Lu KH, Wu WW, Yang YC, Yang YP, Chiang CH, Hsieh JH, Chang YL, Lee SD. Generation of high quality of hepatocyte-like cells from induced pluripotent stem cells with Parp1 but lacking c-Myc. J Chin Med Assoc 2018; 81:871-877. [PMID: 30017813 DOI: 10.1016/j.jcma.2018.06.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 09/20/2017] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Induced pluripotent stem cells (iPSCs) have a great potential for application in patient-specific therapy. The reprogramming method that does not involve c-Myc reduces tumorigenic risk, but also largely reduces the efficiency of generation of iPSCs, especially for those reprogrammed from damaged cells. Poly(ADP-ribose) polymerase 1 (Parp1) catalyzes a reaction of poly(ADP-ribosylation) and has been reported to enhance cell reprogramming. METHODS Using Oct-4/Sox2/Klf4/Parp1 (OSKP) reprogramming method, reprogramming factors plus Parp1 were capable of generation of iPSCs from adult fibroblasts and further toward to differentiate from iPSCs status into hepatocyte-like cells. RESULTS Our results showed that Oct-4/Sox2/Klf4/Parp1 (OSKP)-derived iPSC exhibited regular pluripotent properties, long-term passages and more stable cellular-divided period. These OSKP-derived iPSCs can effectively differentiate into hepatocyte-like cells (OSKP-iPSC-Heps), and present high mRNA levels of Sox17, HNF3b, and HNF4a in OSKP-iPSC-Heps. The mature hepatic functions, including CYP3A4, LDL uptake, glycogen synthesis and urea secretion were analyzed and well detected in OSKP-iPSC-Heps on day 14 post-differentiation. CONCLUSION In conclusion, we demonstrated that Parp1 promoted reprogramming process to generate the high quality of iPSCs, which could be used as a high quality source of hepatocytes.
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Affiliation(s)
- Chi-Shuan Huang
- Division of Colorectal Surgery, Department of Surgery, Cheng-Hsin General Hospital, Taipei, Taiwan, ROC
| | - Hsin-Chi Lin
- Division of Gastroenterology, Department of Internal Medicine, Cheng-Hsin General Hospital, Taipei, Taiwan, ROC; Department of Medical Research and Education, Cheng-Hsin General Hospital, Taipei, Taiwan, ROC
| | - Kai-Hsi Lu
- Department of Medical Research and Education, Cheng-Hsin General Hospital, Taipei, Taiwan, ROC
| | - Wai-Wah Wu
- Division of Gastroenterology, Department of Internal Medicine, Cheng-Hsin General Hospital, Taipei, Taiwan, ROC
| | - Ya-Chi Yang
- Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Yi-Ping Yang
- Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Chih-Hung Chiang
- School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC; Division of Urology, Department of Surgery, Taipei Veterans General Hospital and Su-Ao & Yuan-Shan Branch, Taipei, Taiwan, ROC
| | - Jung-Hung Hsieh
- School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC; Division of Urology, Department of Surgery, Taipei Veterans General Hospital and Su-Ao & Yuan-Shan Branch, Taipei, Taiwan, ROC
| | - Yuh-Lih Chang
- Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan, ROC; School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC; Department of Pharmacy, Taipei Veterans General Hospital, Taipei, Taiwan, ROC.
| | - Shou-Dong Lee
- Division of Gastroenterology, Department of Internal Medicine, Cheng-Hsin General Hospital, Taipei, Taiwan, ROC; School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC.
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Abstract
Sensory analysis and thiobarbituric acid (TBA) tests were conducted on beef (Longissimus muscle) which had been roasted in a conventional electric oven at 163 degrees C (325 degrees F), sliced and stored in either a vacuum package or in a casserole at 4 degrees C (40 degrees F), for two or for seven days, and then reheated in a conventional or in a microwave oven. Methods of reheating, microwave or conventional oven, did not influence sensory scores for warmed-over aroma or flavor or TBA values. Method of packaging influenced both sensory scores and TBA values whereas length of storage affected only TBA values.
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Chua JW, Hsieh JH. Oxidative bioconversion of toluene to 1,3-butadiene-1,4-dicarboxylic acid (cis,cis-muconic acid). World J Microbiol Biotechnol 2014; 6:127-43. [PMID: 24429984 DOI: 10.1007/bf01200932] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/1990] [Accepted: 02/01/1990] [Indexed: 11/30/2022]
Abstract
Pseudomonas sp. strains, isolated from soil, utilized toluene as their sole carbon source through ameta cleavage pathway. Strains metabolizing toluene through anortho cleavage pathway were selected from the wild typemeta strain. Theortho pathway strains were subjected to chemostat selection to obtain a fast-growing strain with doubling time reduced from 14 to 1.2 h. Benzoale and antibiotics enrichment selection procedures were utilized to select a blocked mutant. The blocked mutant grew on acetate as its sole carbon source and oxidatively converted toluene tocis, cis-muconic acid. Double-blocked and muconate-permeable mutants were also selected to reduce reversion frequency and to enhance muconic acid production. In shake-flask experiments, muconic acid at 3.5 g/l was obtained after 2 days of fermentation. In a 14 l fermenter, muconic acid was produced at 45 g/l in 4 days of controlled fed-batch fermentation. The oxidative bioconversion process was also demonstrated in a 1500 l fermenter.
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Affiliation(s)
- J W Chua
- Development Center for Biotechnology, 81 Chang Hsing Street, Taipei, Taiwan, ROC
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Chiang CH, Huo TI, Sun CC, Hsieh JH, Chien Y, Lu KH, Lee SD. Induced pluripotent stem cells and hepatic differentiation. J Chin Med Assoc 2013; 76:599-605. [PMID: 23933345 DOI: 10.1016/j.jcma.2013.07.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2013] [Accepted: 03/20/2013] [Indexed: 11/22/2022] Open
Abstract
Induced pluripotent stem cells (iPSCs) are generated by reprogramming somatic cells to a pluripotent state by the introduction of specific factors. They can be generated from cells of different origins, such as fibroblasts, keratinocytes, hepatocytes, and blood. iPSCs are similar to embryonic stem cells (ESCs) in several aspects, such as morphology, expression of pluripotency markers, and the ability to develop teratoma that contains tissue from three germ layers. In addition, iPSCs can undergo tridermal differentiation, including hepatic specific lineages. Considering that iPSCs could be a source of hepatocyte regeneration, iPSC-based therapy has been widely implicated in the treatment of liver disease and hepatic regeneration. In the present review, we discuss the therapeutic potential of iPSCs in hepatic repair and focus on the clinical applications of iPSCs.
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Affiliation(s)
- Chih-Hung Chiang
- Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan, ROC; Division of Urology, Department of Surgery, Taipei Veterans General Hospital and Su-Ao/Yuan-Shan Branch, Yi-Lan, Taiwan, ROC
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Chang HM, Liao YW, Chiang CH, Chen YJ, Lai YH, Chang YL, Chen HL, Jeng SY, Hsieh JH, Peng CH, Li HY, Chien Y, Chen SY, Chen LK, Huo TI. Improvement of carbon tetrachloride-induced acute hepatic failure by transplantation of induced pluripotent stem cells without reprogramming factor c-Myc. Int J Mol Sci 2012; 13:3598-3617. [PMID: 22489170 PMCID: PMC3317730 DOI: 10.3390/ijms13033598] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Revised: 02/13/2012] [Accepted: 02/28/2012] [Indexed: 12/19/2022] Open
Abstract
The only curative treatment for hepatic failure is liver transplantation. Unfortunately, this treatment has several major limitations, as for example donor organ shortage. A previous report demonstrated that transplantation of induced pluripotent stem cells without reprogramming factor c-Myc (3-genes iPSCs) attenuates thioacetamide-induced hepatic failure with minimal incidence of tumorigenicity. In this study, we investigated whether 3-genes iPSC transplantation is capable of rescuing carbon tetrachloride (CCl4)-induced fulminant hepatic failure and hepatic encephalopathy in mice. Firstly, we demonstrated that 3-genes iPSCs possess the capacity to differentiate into hepatocyte-like cells (iPSC-Heps) that exhibit biological functions and express various hepatic specific markers. 3-genes iPSCs also exhibited several antioxidant enzymes that prevented CCl4-induced reactive oxygen species production and cell death. Intraperitoneal transplantation of either 3-genes iPSCs or 3-genes iPSC-Heps significantly reduced hepatic necrotic areas, improved hepatic functions, and survival rate in CCl4-treated mice. CCl4-induced hepatic encephalopathy was also improved by 3-genes iPSC transplantation. Hoechst staining confirmed the successful engraftment of both 3-genes iPSCs and 3-genes iPSC-Heps, indicating the homing properties of these cells. The most pronounced hepatoprotective effect of iPSCs appeared to originate from the highest antioxidant activity of 3-gene iPSCs among all transplanted cells. In summary, our findings demonstrated that 3-genes iPSCs serve as an available cell source for the treatment of an experimental model of acute liver diseases.
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Affiliation(s)
- Hua-Ming Chang
- Department of Optics and Photonics, National Central University, Chung-Li, Taiwan; E-Mails: (H.-M.C.); (S.-Y.C.)
| | - Yi-Wen Liao
- Institute of Oral Biology, School of Dentistry, National Yang-Ming University, Taipei, Taiwan; E-Mails: (Y.-W.L.); (H.-L.C.)
| | - Chih-Hung Chiang
- Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan; E-Mails: (C.-H.C.); (Y.-L.C.)
- Division of Urology, Department of Surgery, Taipei Veterans General Hospital and Su-Ao/Yuan-Shan Branch, Yilan County, Taiwan; E-Mails: (S.-Y.J.); (J.-H.H.)
| | - Yi-Jen Chen
- School of Medicine, National Yang-Ming University, Taipei, Taiwan; E-Mails: (Y.-J.C.); (Y.-H.L.); (C.-H.P.); (H.-Y.L.); (L.-K.C.)
- Department of Obstetrics and Gynecology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Ying-Hsiu Lai
- School of Medicine, National Yang-Ming University, Taipei, Taiwan; E-Mails: (Y.-J.C.); (Y.-H.L.); (C.-H.P.); (H.-Y.L.); (L.-K.C.)
- Department of Medical Research and Education, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yuh-Lih Chang
- Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan; E-Mails: (C.-H.C.); (Y.-L.C.)
- Department of Medical Research and Education, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Hen-Li Chen
- Institute of Oral Biology, School of Dentistry, National Yang-Ming University, Taipei, Taiwan; E-Mails: (Y.-W.L.); (H.-L.C.)
| | - Shaw-Yeu Jeng
- Division of Urology, Department of Surgery, Taipei Veterans General Hospital and Su-Ao/Yuan-Shan Branch, Yilan County, Taiwan; E-Mails: (S.-Y.J.); (J.-H.H.)
- School of Medicine, National Yang-Ming University, Taipei, Taiwan; E-Mails: (Y.-J.C.); (Y.-H.L.); (C.-H.P.); (H.-Y.L.); (L.-K.C.)
| | - Jung-Hung Hsieh
- Division of Urology, Department of Surgery, Taipei Veterans General Hospital and Su-Ao/Yuan-Shan Branch, Yilan County, Taiwan; E-Mails: (S.-Y.J.); (J.-H.H.)
- School of Medicine, National Yang-Ming University, Taipei, Taiwan; E-Mails: (Y.-J.C.); (Y.-H.L.); (C.-H.P.); (H.-Y.L.); (L.-K.C.)
| | - Chi-Hsien Peng
- School of Medicine, National Yang-Ming University, Taipei, Taiwan; E-Mails: (Y.-J.C.); (Y.-H.L.); (C.-H.P.); (H.-Y.L.); (L.-K.C.)
- Shin Kong Wu Ho-Su Memorial Hospital and Fu-Jen Catholic University, Taipei, Taiwan
| | - Hsin-Yang Li
- School of Medicine, National Yang-Ming University, Taipei, Taiwan; E-Mails: (Y.-J.C.); (Y.-H.L.); (C.-H.P.); (H.-Y.L.); (L.-K.C.)
- Department of Obstetrics and Gynecology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yueh Chien
- School of Medicine, National Yang-Ming University, Taipei, Taiwan; E-Mails: (Y.-J.C.); (Y.-H.L.); (C.-H.P.); (H.-Y.L.); (L.-K.C.)
- Department of Medical Research and Education, Taipei Veterans General Hospital, Taipei, Taiwan
- Authors to whom correspondence should be addressed; E-Mails: (Y.C.); (T.-I.H.); Tel.: +886-2-28757394 (Y.C.); +886-2-28757394 (T.-I.H.); Fax: +886-2-28757396 (Y.C.); +886-2-28757396 (T.-I.H.)
| | - Szu-Yu Chen
- Department of Optics and Photonics, National Central University, Chung-Li, Taiwan; E-Mails: (H.-M.C.); (S.-Y.C.)
| | - Liang-Kung Chen
- School of Medicine, National Yang-Ming University, Taipei, Taiwan; E-Mails: (Y.-J.C.); (Y.-H.L.); (C.-H.P.); (H.-Y.L.); (L.-K.C.)
- Center for Geriatrics and Gerontology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Teh-Ia Huo
- Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan; E-Mails: (C.-H.C.); (Y.-L.C.)
- Division of Gastroenterology, Department of Internal Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- Authors to whom correspondence should be addressed; E-Mails: (Y.C.); (T.-I.H.); Tel.: +886-2-28757394 (Y.C.); +886-2-28757394 (T.-I.H.); Fax: +886-2-28757396 (Y.C.); +886-2-28757396 (T.-I.H.)
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Chen GS, Chen CN, Tseng TT, Wei MH, Hsieh JH, Tseng WJ. Synthesis, characterization, and antibacterial activity of silver-doped silica nanocomposite particles. J Nanosci Nanotechnol 2011; 11:90-97. [PMID: 21446411 DOI: 10.1166/jnn.2011.3041] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Silver nanoparticles were adsorbed preferentially on silica surface to form composite particles using a reverse micelle process that stabilizes the silver particles by an anionic sodium bis(2-ethylhexyl) sulfosuccinate (AOT) surfactant in isooctane solvent together with the silica particles in which their surface being mediated by a cationic poly(allylamine hydrochloride) (PAH) polyelectrolyte. The heterogeneous adsorption was rendered by both electrostatic attraction and hydrophilic/hydrophobic interaction, and was carried out in multiple deposition cycles. The resulting nanocomposite particles were characterized by zeta-potential measurement, electron microscopy, X-ray diffractometry, field-emission electron spectroscopy for chemical analysis (ESCA), and inductively coupled plasma analysis, respectively. In addition, antibacterial activity of the composite particles was examined against Escherichia coli (E. coli) in aqueous environment.
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Affiliation(s)
- Guo-Shu Chen
- Department of Materials Science and Engineering, National Chung Hsing University, Taichung 402, Taiwan
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Hsieh JH, Chung JL, Su CK, Yen CT, Chai CY. Mechanisms underlying the cardioinhibitory and pressor responses elicited from the medullary neurons in the gigantocellular tegmental field of cats. CHINESE J PHYSIOL 2004; 47:143-51. [PMID: 15612532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023] Open
Abstract
A stimulation of the gigantocellular tegmental field (FTG) in the medulla oblongata often increases systemic arterial blood pressure (SAP) and decreases heart rate (HR). We investigated if the cardioinhibitory/depressor areas, including the nucleus ambiguus (NA), the dorsal motor nucleus of vagus (DMV) and the caudal ventrolateral medulla (CVLM), underlied the functional expression of FTG neurons in regulating cardiovascular responses. In 73 chloralose-urethane anesthetized cats, the HR, SAP and vertebral nerve activity (VNA) were recorded. Neurons in the FTG, NA, DMV and CVLM were stimulated by microinjection of sodium glutamate (25 mM Glu, 70 nl). To study if the NA, DMV, and CVLM relayed the cardioinhibitory messages from the FTG, 24 mM kainic acid (KA, 100 nl) was used as an excitotoxic agent to lesion neurons in the NA, DMV or CVLM. We found that the cardioinhibition induced by FTG stimulation was significantly reduced by KA lesioning of the ipsilateral NA or DMV. Subsequently, a bilateral KA lesion of NA or DMV abolished the cardioinhibitory responses of FTG. Compared to the consequence of KA lesion of the DMV, only a smaller bradycardia was induced by FTG stimulation after KA lesion of the NA. The pressor response induced by Glu stimulation of the FTG was reduced by the KA lesion of the CVLM. Such an effect was dominant ipsilaterally. Our findings suggested that both NA and DMV mediated the cardioinhibitory responses of FTG. The pressor message from the FTG neurons might be partly working via a disinhibitory mechanism through the depressor neurons located in the CVLM.
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Affiliation(s)
- J H Hsieh
- Institute of Biomedical Engineering, Chung Yuan Christian University, Chung Li 32o, Taiwan, ROC.
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Hsieh JH, Chang YC, Chung JL, Hsiao MC, Chen SC, Yen CT, Chai CY. The relationship between FTL and NA, DMV or CVLM in central cardiovascular control. CHINESE J PHYSIOL 2001; 44:169-79. [PMID: 11908546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023] Open
Abstract
The aim of the present study was to examine the relationship between the lateral tegmental field (FTL), a cardioinhibitory area, with other cardioinhibitory areas, i.e., the ambiguus nucleus (NA) and the dorsal motor nucleus of vagus (DMV) and the caudal ventrolateral medulla (CVLM), a vasopressor inhibitory area. In 55 cats anesthetized with chloralose (40 mg/kg) and urethane (400 mg/kg), the cardiovascular responses of heart rate (HR), systemic arterial blood pressure (SAP) and vertebral nerve activity (VNA) were recorded. The FTL, NA, DMV and CVLM were identified first by stimulation (rectangular pulses in 80 Hz, 0.5 ms, 50-100 microA) and then confirmed by microinjection of sodium glutamate (Glu, 0.25M, 70 nl). In studying the influence of NA, DMV, or CVLM lesion on the Gluinduced responses in FTL, kainic acid (KA, 24 mM, 100 nl) was microinjected into the NA, DMV or CVLM. FTL stimulation produced an average decrease of HR by 55%. After KA lesioning of the ipsilateral NA or the DMV, the decreased HR induced by FTL was significantly diminished. After subsequent lesion of the contralateral DMV or NA, the bradycardia of FTL was abolished. The reduction of resting HR was more intense after lesioning the NA than DMV and with the left side more than that of the right side. These studies suggest that the cardioinhibitory responses of FTL are mediated through both NA and DMV with predominance of the former, while the hypotensive effect of FTL is mediated through CVLM. The precise pathway responsible for the FTL-induced bradycardia and hypotension is to be determined.
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Affiliation(s)
- J H Hsieh
- Institute of Biomedical Engineering, Chung Yuan Christian University, Taiwan, ROC
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Tsai CL, Yang YF, Han CC, Hsieh JH, Chang M. Measurement and simulation of light distribution in biological tissues. Appl Opt 2001; 40:5770-5777. [PMID: 18364868 DOI: 10.1364/ao.40.005770] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Lateral light-distribution images of biologic tissues were used to study the tissues' optical characteristics. Monte Carlo simulation with the same conditions was performed to simulate the light distribution for comparison. Simulation results showed that the lateral light distribution was similar to the internal light distribution in biologic tissue. The direction of muscle fibers and the temperature both affect the near-field light distribution in tissue. The lateral view distribution can be both measured and simulated to study photon migration in tissue. It can also be used to estimate or verify the optical coefficients of tissue.
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Lin TC, Chang FH, Hsieh JH, Chao HR, Chao MR. Environmental exposure to polycyclic aromatic hydrocarbons and total suspended particulates in a Taiwanese temple. Bull Environ Contam Toxicol 2001; 67:332-338. [PMID: 11479661 DOI: 10.1007/s001280129] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2000] [Accepted: 05/22/2001] [Indexed: 05/23/2023]
Affiliation(s)
- T C Lin
- Department of Environmental Engineering, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan, Republic of China
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Hsieh JH, Chen YS, Han YY, Hsieh CH, Chang CI, Ko WJ. Use of extracorporeal membrane oxygenation to rescue a child with acute respiratory distress syndrome. J Formos Med Assoc 2000; 99:257-60. [PMID: 10820961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023] Open
Abstract
Acute respiratory distress syndrome (ARDS) carries a high mortality of about 60%. The results of conventional treatments for ARDS are poor. We report the use of extracorporeal membrane oxygenation (ECMO) to rescue a child with ARDS. The patient, a 7-year-old boy, underwent a Ross procedure and mitral valvuloplasty because of severe aortic and mild mitral regurgitation. ARDS due to massive transfusion and prolonged cardiopulmonary bypass developed in the early postoperative period. Hypoxemia persisted despite conventional treatments, including pressure-controlled ventilation and high-frequency ventilation. Finally, venovenous ECMO was used to rescue the patient. With ECMO support, gas exchange was well maintained with a lower ventilator setting, and ventilator-induced lung injuries were avoided. ECMO was used for 183 hours, at which point the boy was weaned without complications. His recovery was uneventful. At the latest follow-up, 6 months after the operation, he was in New York Heart Association function class I and had no complaints of lung disease. This case suggests that venovenous ECMO can be a rescue method for patients with ARDS that is refractory to conventional treatments.
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Affiliation(s)
- J H Hsieh
- Department of Surgery, National Taiwan University Hospital, Taipei
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Hsieh JH, Chang YC, Su CK, Hwang JC, Yen CT, Chai CY. A single minute lesion around the ventral respiratory group in medulla produces fatal apnea in cats. J Auton Nerv Syst 1998; 73:7-18. [PMID: 9808366 DOI: 10.1016/s0165-1838(98)00117-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
In 35 adult cats anesthetized with intraperitoneal chloralose and urethane, the ventrolateral medulla was explored by microinjection of kainic acid (KA, 24 mM, 200 nl) with metal electrode-tubing or glass micropipette to determine regions which elicit persistent apnea. Persistent apnea is defined as: (1) In spontaneously breathing cats, termination of respiration over 3 min with a decrease of the mean systemic arterial pressure (MSAP) to 25 mm Hg. (2) In animals under artificial ventilation and paralyzed by gallamine, cessation of bilateral phrenic nerve (PNA) activities over 25 min. The apnea producing area was located dorsal to the rostral pole of the lateral reticular nucleus, ventromedial to the ambiguous nucleus and immediately caudal to the retrofacial nucleus. Functionally, this region includes the rostral part of the ventral respiratory group (rVRG) encompassing the pre-BOtzinger area. We define this region as the VRG apnea producing area (VRG-Apa). Fatal apneusis was observed under following conditions: (1) Persistent apnea was produced after a single KA microinjection in one side of the VRG-Apa (5 animals). Microinjection of sodium glutamate (0.25 M, 70-200 nl) in the same area produced only brief apnea, while microinjection of kynurenic acid (0.1 M, 200 nl) showed little effect on the respiration but slightly increased the SAP. (2) Positioning an electrode nearby but not in the VRG-Apa with or without KA injection did not produce apnea. But when a second electrode insertion to the opposite VRG-Apa immediately produced persistent apnea even without KA injection (6 animals). (3) Midsagittal division of the medulla 0-5 mm rostral to the obex produced persistent silence of PNA on both sides in artificial ventilated animals (7 animals), while similar division 0-5 mm caudal to the obex (4 animals) produced a brief but reversible quiescence of PNA. In conclusion, findings of the present study support the existence of a restricted region of VRG-Apa. VRG-Apa on both sides are closely connected, and integrity of both VRG-Apa is essential for normal respiration.
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Affiliation(s)
- J H Hsieh
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
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Hsieh JH, Wu JJ, Yen CT, Chai CY. The depressor caudal ventrolateral medulla: its correlation with the pressor dorsomedial and ventrolateral medulla and the depressor paramedian reticular nucleus. J Auton Nerv Syst 1998; 70:103-14. [PMID: 9686910 DOI: 10.1016/s0165-1838(98)00043-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The functional correlation of the depressor caudal ventrolateral medulla (CVLM) with the two pressor regions, i.e. rostral ventrolateral medulla (RVLM) and dorsomedial medulla (DM), and with another inhibitory region, i.e. the paramedian reticular nucleus (PRN), were studied in cats anesthetized intraperitoneally with chloralose (40 mg/kg) and urethane (400 mg/kg). Systemic arterial pressure (SAP), heart rate (HR) and the sympathetic vertebral nerve activity (VNA) were recorded. The correct location of CVLM, RVLM or DM was determined by their specific responses, i.e. decreases of SAP, HR and VNA, for CVLM increases of these parameters for RVLM and DM, elicited first by electrical stimulation (80 Hz, 0.5 ms, 50-100 microA) then followed by microinjection of glutamate (Glu, 0.25 M, 70 nl). The depressor action of PRN was produced by electrical stimulation only. It was found that the depressor responses caused by the CVLM stimulation were greatly reduced 2 h after lesioning either the RVLM or DM by microinjection of kainic acid (KA, 24 mM, 200 nl) ipsilateral to the side of CVLM stimulation. The CVLM responses were further reduced after the remaining side of RVLM or DM was lesioned. The reduction of the CVLM-depressor responses was more apparent after the RVLM than DM lesioning. Data suggest that the CVLM-depressor responses are mediated through inhibition of the sympathetic-pressor neurons in both RVLM and DM with predominance of the former. Lesioning the PRN by KA and/or combination with DC electrolytic lesion reduced the CVLM-induced depressor responses. In turn, lesioning the CVLM by KA reduced the PRN-induced depressor responses. The reduction in the later manipulation was more apparent in the PRN-depressor responses than the CVLM-depressor responses. Data suggest that part of the PRN depressor action is mediated through activation of the CVLM.
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Affiliation(s)
- J H Hsieh
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
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Hsieh JH, Chen RF, Wu JJ, Yen CT, Chai CY. Vagal innervation of the gastrointestinal tract arises from dorsal motor nucleus while that of the heart largely from nucleus ambiguus in the cat. J Auton Nerv Syst 1998; 70:38-50. [PMID: 9686902 DOI: 10.1016/s0165-1838(98)00027-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The origin of medullary cells that form the cardiac vagal branch and the vagal branches in the lower thorax innervating the gastrointestinal (GI) tract was studied using horseradish peroxidase (HRP), a retrograde transport tracer in the cat. The distributions of parasympathetic postganglionic neurons of the heart were studied with acetylcholinesterase histochemistry. Intracardiac ganglionic neurons were found mainly in the connective tissue surrounding the base of the pulmonary arteries and in an area in and dorsal to the interatrial septum. Following injection of HRP into the subepicardum where most of the cardiac postganglionic neurons reside, 91% of the labelled neurons were found bilaterally distributed in the nucleus ambiguus (NA). A small population of labelled neurons was found in the dorsal motor nucleus of the vagus (DMV) and an intermediate zone (IZ) between the two nuclei. When HRP was injected into the left or right cardiopulmonary vagus branch, labelled neurons were found exclusively in the ipsilateral NA, DMV and IZ with a predominance in the NA. In the thorax, after they course around the heart, the left and right thoracic vagus nerves divides into a left and a right branch, respectively. The left branch of the left thoracic vagus joins the left branch of the right thoracic vagus to form the anterior vagus nerve at 3 cm above the diaphragm. The right branch of the right thoracic vagus nerve joins the right branch of the left thoracic vagus to form the posterior vagus nerve. After application of HRP into the right or the left branch of the left thoracic vagus, HRP labelled cells were found in the left DMV. Similarly, after application of HRP into the left or the right branch of the right thoracic vagus, labelled cells were found in the right DMV. On the other hand, when HRP was injected into the anterior vagus, labelled neurons were found bilaterally in the DMV. This suggests that all rostral branches of the thoracic vagus have their origin in the ipsilateral DMV, and intermixing occurs only at the caudal level near the diaphragm. Findings of the present experiments suggest that parasympathetic preganglionic neurons innervating the GI tract are located exclusively in the DMV while those of the heart are located mainly in the NA. Within the DMV, GI vagal neurons were found medially from the level 0-2.5 mm rostral to the obex. In contrast, cardiac vagal neurons were found in the lateral edge of the DMV at the level 0-1 mm rostral to the obex.
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Affiliation(s)
- J H Hsieh
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
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Hsieh JH, Chen WS, Jiang JK, Lin TC, Lin JK, Hsu H. Enterovesical fistula: 10 years experience. Zhonghua Yi Xue Za Zhi (Taipei) 1997; 59:283-8. [PMID: 9248120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Enterovesical fistula is a relatively uncommon complication of pelvic malignancies, diverticulitis of the colon, postoperative irradiation or trauma. Early diagnosis of enterovesical fistula is difficult and its management, complicated. The main purpose of this study is to investigate the most appropriate diagnostic method and to discuss the choice among different surgical managements. METHODS From 1986 to 1995, 30 patients with enterovesical fistula were diagnosed and treated at Veterans General Hospital-Taipei. The records were reviewed retrospectively with regard to symptoms, primary disease process, diagnostic studies, management, complications, mortality and follow-up. RESULTS Recurrent urinary tract infection (UTI) accounted for 73% and was the most common presenting symptom. Fecaluria (43%) and urine per rectum (40%) were another two common presenting symptoms. The major cause of these cases was malignancy (36%), followed by postoperative radiotherapy (17%) and iatrogenic injury (17%). Most of these cases were diagnosed by cystography (90%), barium enema (75%) or cystoscopy (69%). The rectum (52%) was the most common site involved, followed by the sigmoid colon (39%). The surgical management was individualized for each patient according to the general condition and the disease process. CONCLUSIONS By combining the results of cystography, barium enema and cystoscopy, diagnosis of enterovesical fistula can be established in almost all cases. Single-stage operation for enterovesical fistula should be limited to those patients in good nutritional state and without severe inflammation, radiation injury, intestinal obstruction, other major medical problem, advanced malignancy or old age.
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Affiliation(s)
- J H Hsieh
- Department of Surgery, Veterans General Hospital-Taipei, Taiwan, R.O.C
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Kuo SW, Hsieh JH, Wu WC, Horng HT, Shian LR, Chai CY. Effects of insulin on the cardiovascular integrating mechanisms of brain stem in cats. Am J Physiol 1993; 265:E609-16. [PMID: 8238337 DOI: 10.1152/ajpendo.1993.265.4.e609] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
In 65 cats anesthetized with alpha-chloralose and urethane, the effects of insulin on cardiovascular responses to stimulation of various structures in the brain stem were studied. The threshold dose of insulin injected intravenously that produced systemic hypoglycemia was 5-10 U/kg. Subthreshold hypoglycemic doses of insulin were used intracerebroventricularly (0.25 U/kg) or intracerebrally (2 mU in 200 nl). Sixty minutes after intravenous insulin, when serum glucose concentrations decreased from 158 to 43 mg/100 ml, pressor responses to stimulation of the periaqueductal gray of midbrain (PAG), locus coeruleus (LC), dorsal medulla (DM), ventrolateral medulla (VLM), and parvocellular reticular nucleus (PVC) decreased significantly. Depressor and bradycardiac response to stimulation of paramedian reticular nucleus or dorsal motor nucleus of vagus (DMV) decreased significantly as well. Thirty minutes after intracerebroventricular insulin, pressor responses of PAG, DM, and the bradycardiac response of DMV decreased significantly. Thirty minutes after intracerebral insulin, pressor responses and renal nerve activities of LC (but not PAG), VLM, DM, and PVC decreased significantly. A similar but faster onset (5 min) of depression of cardiovascular responses on stimulating the LC, VLM, DM, and PVC was observed in another six acutely midcollicular-decerebrate cats recovered from halothane anesthesia. These findings suggest that insulin directly inhibits the vasomotor structures of the brain stem and decreases the pressor responses to stimulation.
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Affiliation(s)
- S W Kuo
- Department of Medicine, Tri-Service General Hospital, Taipei, Taiwan
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Hsieh JH, Matthews ME, Hartel RW. Effects of meat color, oven temperature, and sampling position on thiamin retention and moisture content of cooked turkey rolls. J Am Diet Assoc 1991; 91:845-6. [PMID: 2071802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- J H Hsieh
- Department of Food Science, University of Wisconsin-Madison 53706
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Liu JJ, Chen BS, Tsai TF, Wu YJ, Pang VF, Hsieh A, Hsieh JH, Chang TH. Long term and large-scale cultivation of human hepatoma Hep G2 cells in hollow fiber bioreactor. Cytotechnology 1991; 5:129-39. [PMID: 1369306 DOI: 10.1007/bf00365429] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
Long-term and large scale cultivation of an anchorage-dependent cell line using an industrial scale hollow fiber perfusion bioreactor is described. Hep G2 cells (a human hepatoma cell line) were cultivated in an Acusyst-P (Endotronic) with a total fiber surface area of 7.2 m2 6 x 1.2m2) to produce Hep G2 crude conditioned medium (CCM). Pretreatment of the cellulose acetate hollow fibers with collagen enhances the attachment of the anchorage-dependent cells. We have succeeded in growing the Hep G2 cells in an antibiotics- and serum-free IMDM medium, supplemented with 50 micrograms/ml of Hep G2 CCM protein at inoculation. The Hep G2 cells replicate and secrete CCM protein in quantities comparable to those produced in DMEM containing 10% fetal calf serum (FCS). The highest CCM protein productivity during the 80-day cultivation was 1.1 g/day with a total of 30 g of protein accumulated. Hep G2 CCM (20-40 micrograms protein/ml) was comparable to or even better than 10% FCS in supporting the growth of Molt-4 (a human T leukemia cell line) and FO (a mouse myeloma cell line) cells in vitro. The availability of this large amount of Hep G2 CCM will aid the further purification and characterization of growth factor(s) which could be used as serum substituents.
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Affiliation(s)
- J J Liu
- Development Center for Biotechnology, Taipei, Taiwan, ROC
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Tocco DJ, deLuna FA, Duncan AE, Hsieh JH, Lin JH. Interspecies differences in stereoselective protein binding and clearance of MK-571. Drug Metab Dispos 1990; 18:388-92. [PMID: 1976057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
(+)-3-(((3-(2-(7-chloro-2-quinolinyl)ethenyl)phenyl)((3-(dimethylamino)- 3-oxopropyl)thio)methyl)thio)propanoic acid (MK-571), is a potent and specific antagonist of leukotriene D4 action in vitro and in vivo. The compound, which is being developed for the treatment of asthma, contains a chiral center at the methine carbon of the dithio side chain and exists in two forms. The binding of MK-571 enantiomers to plasma protein was extensive (greater than 99.5%), stereoselective, and species dependent. The R-(-)-enantiomer was bound to rat plasma to a greater extent than the S-(+)-enantiomer, while in dog and monkey plasma the reverse was the case. The elimination clearance of the enantiomers was inversely related to the stereoselective plasma protein binding, that with the greater unbound fraction being cleared more rapidly. Thus, the pharmacologically more active S-(+)-enantiomer was cleared 3.7 times more rapidly than its antipode in rats following iv administration of the racemate (10 mg/kg), whereas in dogs and monkeys the R-(-)-enantiomer was cleared more rapidly. Kinetic analysis of the data revealed that the intrinsic clearances of the unbound enantiomers were similar within species, suggesting that stereoselectivity in elimination is not attributable to differences in metabolism and biliary excretion. Bioavailabilities of the S-(+)- and R-(-)-enantiomers in the rat were similar (75% and 71%, respectively) suggesting that MK-571 was not stereoselectively absorbed in that species.
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Affiliation(s)
- D J Tocco
- Merck, Sharpe & Dohme Research Laboratory, Division of Merck Company, West Point, PA 19486
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Chen BS, Chen GC, Hsieh JH, Meng MH, Tsai TF, Liu JJ, Huang JH, Chang TH. [Large-scale production of monoclonal antibodies using hollow fiber bioreactor]. Zhonghua Min Guo Wei Sheng Wu Ji Mian Yi Xue Za Zhi 1990; 23:75-88. [PMID: 1697521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Development of large-scale monoclonal antibody production using industrial scale hollow fiber bioreactor is described. Hybridoma cell lines H505AC and A306AA were cultivated in the hollow fiber perfusion bioreactor with a total fiber surface area of 7.2 m2 (6 x 1.2 m2) to produce anti-hepatitis B surface antigen (anti-HBsAg) monoclonal antibody IgM and anti-alpha-fetal protein (anti-AFP) monoclonal antibody IgG. The highest anti-HBsAg IgM productivity obtained during 49 days cultivation of H505AC was 0.135 g/day and the total accumulated IgM was 1.90 g. Results from the cultivation of A306AA in the hollow fiber module for 23 days showed the highest anti-AFP IgG productivity and the total accumulated IgG were 0.672 g/day and 7.21 g, respectively.
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Affiliation(s)
- B S Chen
- Development Center for Biotechnology, Taipei, Taiwan, R.O.C
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Hsieh JH, Matthews ME, Hartel RW. Estimation of product yield and numbers of portions of turkey rolls in a convection oven. J Am Diet Assoc 1989; 89:409-11. [PMID: 2921450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- J H Hsieh
- Department of Food Science, University of Wisconsin-Madison 53706
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Abstract
Cardiovascular parameters of spontaneously breathing pond turtles (Cyclemys flavomarginata) anaesthetized with chloralose (4 mg 100 g-1) and urethane (40 mg 100 g-1), were examined during exploratory electrical stimulation of the brain stem. Turtles exhibited a low mean systemic arterial blood pressure (MSAP, average 25 mmHg) and slow heart rate (average 24 beats min-1). Upon stimulation, pressor (sympathetic), depressor (sympathetic inhibition), bradycardia and hypotensive (vagal) responses were elicited from regions of the brain stem extending from the hypothalamus to the medulla, principally in the medial region. The pressor response appeared after a longer latency than did the bradycardia and hypotensive responses. It developed rather slowly, and rarely attained a magnitude double its resting value. In contrast, stimulation of many points in the brain stem produced marked slowing or even cessation of the heart beat, and thus resulted in an immediate fall of the blood pressure even to zero. This cardio-inhibitory response depended on the integrity of the vagus nerves and was particularly marked upon stimulation in the caudal medulla, the areas of the ambiguus, solitary and dorsomotor nuclei of the vagus and the midline structures. When such an area was stimulated continuously the heart stopped beating throughout the stimulation. The longest period of cardiac arrest before the appearance of escape was 35 min. With continuous stimulation of the peripheral end of the cut vagus, the earliest escape beat occurred even later (65 min). Epinephrine given intravenously produced an increase of MSAP and force of cardiac contraction, although the slope of pressor rise was shallow. Reflex bradycardia, however, was not observed. These experiments show that a very prominent vagal bradycardia can be evoked from the turtle brain stem, which may contribute to its well-known capacity for tolerating anoxia.
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Affiliation(s)
- J H Hsieh
- Institute of Biomedical Engineering, Chung Yuan Christian University, Taipei, Taiwan, ROC
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Meng MH, Chen GC, Hsieh JH, Yueh Y, Chen SC, Chang TH, Tsao D. [Continuous production of anti-hepatitis B surface antigen monoclonal antibody in hollow fiber perfusion bioreactor]. Zhonghua Min Guo Wei Sheng Wu Ji Mian Yi Xue Za Zhi 1988; 21:125-40. [PMID: 3072154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Hybridoma cell line H440Ac was cultivated continuously in hollow fiber perfusion bioreactor for fifty days to produce anti-hepatitis B surface antigen (anti-HBsAg) monoclonal antibody. A total of 90 mg anti-HBsAg antibody was produced in the hollow fiber bioreactor with 1000 cm2 membrane surface area. The collected production medium has an average antibody concentration of 0.45 mg/ml with a high concentration of 2.3 mg/ml. This compares with 0.016 and 1.1 mg/ml antibody concentration as collected from spinner flask and mouse ascites. The purity of the produced antibody is 0.085, 0.0028 and 0.026 mg antibody per mg of total harvested protein in the culture media produced from the hollow fiber bioreactor, spinner flasks and mouse ascites, respectively.
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Affiliation(s)
- M H Meng
- Development Center for Biotechnology, Taipei, Taiwan, ROC
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